Tank-valve.



W. F. POTTS.

` TANK VALVE. APPLICATION FILED lUNE, 1915.

Patented Oct. 31, 1916.

TANK-VALVE.

Specification of Letters Patent.

Patented wet. 31, 19106.

Application led .Tune 3, 1915. Serial No. 32,935.

T o all whom it may concern:

Be it known that I, WILLIAM F. Po'r'rs, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a certain new and useful Improvement in Tank- Valves, of which the following is a specifcation.

My invention relates to improvements in tank valves.

It is particularly adapted for use in connection with a feed water and tank hose connection between the tank and boiler of a locomotive.

The object of my invention is to provide a tank valve which is simple in construction, is strong and durable, which is not liable to get out of order and in which the parts may be easily assembled and disassembled.

` A further object of my invention is to provide a tank valve proper which may be swung wholly out of the passage way of the water.

A further object of my invention is to provide a valve of novel construction, which may be easily opened against a heavy pres sure of water.

My invention further provides .a construction which may be located wholly outside of the tank so as to be readily accessible.

My invention provides still further a tank valve which is adapted to be inserted at any desirable point between the tank and engine.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates the preferred embodiment of my invention,Figure Lis a central vertical sectional view of my improved tank valve in which the valve proper is shown in solid lines in the. closed position and in dotted lines in the open position, the view being taken on the line 1--1 of Fig. 3. Fig. 2 is a side elevation of the same. Fig. 3 is a horizontal section on the line 3*-3 of Fig. 1. Fig. 4 is a. fragmental vertical sectional view showing the valve in the tilted position. Fig. 5 is a cross section on the line 5-5 of Fig. 3.

Similar reference characters designate similar parts in the di'erent views.

'Ihe valve casing comprises a tubular body 1 having internally threaded ends 'and provided with a lateral opening 2, which is normally covered by a detachable hood 3, which is secured to the y 1 by nuts 4 mounted on bolts 5 with which said body is provided.

The body l is provided with an annular v alve seat 6, in which is adapted to rest a clrcular disk valve 7, the upper side of which is provided with a stirrup 8, through which slidably and loosely extends an arm 9 of a horizontal rock shaft 10, which is oscillatively mounted in a transverse hole 11 provided in the hood 3.

The hood is provided at the-inner end of the hole 11 with an inner recess 12 in which 1s fitted one end of the arm 9. The latter is provided with a transverse hole, preferably otherwise than round, in which is fitted the inner end of the rock shaft 11. The walls of the recess 12 normally hold the arm 9 from longitudinal movement on the rock shaft with which the arm is oscillatable.

The rock shaft is provided with a shoulder comprising, preferably, an annular flange 13, the inner side ofwvhich has a bearing against the hood 3. The transverse hole 11 in the hood is screw-threaded at its outer end and has fitted therein an externally fitted collar 14 which normally holds packing material 15, which encircles the rock shaft 10, tightly against the shoulder 13, thus retaining the rock shaft in its operative position, and against detachment from the arm 9. Secured to the outer end 0f the rock shaft 10 is an operating lever or arm 16 provided, preferably, at its outer end, with a weight 17.

The upper side of the valve 7 is preferably provided with two upwardly extending projections 18 between which the arm 9 is located. The upper side of the valve is also preferably provided with a central projection 19, against which the under side of the arm 9 is adapted to rest. p

In the operation of my invention, when the rock shaft 10 is swung clockwise from the position shown in solid lines in Fig. 1, the arm 9 is swung upwardly, and striking against the stirrup 8 tilts the valve 7 to the position shown in Fig. 4. The parts are held for a brief period in this position to enable the tank hose to become filled, thereby relieving the pressure on top of the valve, after which the valve may be swung into the hood 3 through the opening 2 to the position shown in dotted lines'in Fig. 1, in which position it will be entirely clear of the passage Way, and in which position it hood 3 to be detached. The Valve 7 is then slid off from the arm 9.

I do not limit my invention to the structure shown and described, as modifications, within the scope of the appended claims, may be made withoutl departing from the spirit of my invention.

What I claim is:

1. In a tank valve, a'casing having a valve seat, a valve adapted to be seated against said seat, and a manually operable rook shaft oscillatively mounted in said casing and extending from the interior to the exterior thereof and provided with a crank arm having means when swung to the open position, for first engaging said valve at a point intermediate of the center thereof and said rock shaft, so that the valve is first tilted in said seat and then lifted `bodily therefrom.

2. In 'a tank valve, a casing having a valve seat, a valve adapted to be seated in said seat and provided with a stirrup, disposed eocentrically of said valve, and a manually operable rock -shaft oscillatively mounted in said casing and having an arm insertible endwise through said stirrup and loosely received therein, the valve being freely slidable off from said arm without removal of the rock shaft from its operative position, and the arm when swung to the open position first engaging the stirrup at a point intermediate of the center of the valve and the rock shaft, so as to first tip the valve and Athen lift it bodily from the seat.

3. In -a tank valve, a casing having a valve seat, la valve adapted to be seated in said seat and provided with a'stirrup located wholly between its center and its periphery, and a manually operable rook shaft oscillatively mounted in the casing .and extending to the exterior thereof and having a radial arm which extends loosely through the stirrup and which is adapted to engage the stirrup and thereby first tilt and then lift the Valve from its seat, the stirrup being disposed between the center of the valve and the rock shaft.

In testimony whereof ,I have signed my name to this specification.

WILLIAM F. POTTS. 

